CN102628273B - Utilize dredging markets to charge the large-scale of fill and charge bag fill method and an equipment thereof - Google Patents

Abstract

The embankment method and equipment of large-scale filling bag embankment with dredged soil filling: ⑴. Design the depth and spacing of the plastic drainage boards on the soft soil foundation under the embankment, complete the construction of the drainage boards and install the monitoring facilities in the soft soil foundation; ⑵. Complete the construction of each layer of sand layer and soft soil row; ⑶. Use polyester woven fabrics to process large filling bags for use; ⑷. Install dredged soil filling equipment; ⑸. Install vacuum device; ⑹. Laying vacuum drainage network; ⑺. Filling bag laying and filling construction; ⑻. Install embankment sealing system; ⑼. Turn on the vacuum system to accelerate the drainage and consolidation of the dredged soil filling body, and carry out related monitoring and testing work simultaneously; ⑽. Utilize the whole process of raising the embankment body to complete the protection structure on the outer sea side and the slope protection structure on the inner sea side in time to strengthen the protection of the embankment body. The equipment used in the method is the filling equipment for filling bags with dredged soil. The invention reduces the construction cost of embankment, protects the environment, ensures the stability of the embankment body, and the clay content of the filling body is 10%.

Description

Large-scale filling bag embankment method and equipment for filling embankment with dredged soil

technical field

The invention relates to a large-scale filling bag embankment embankment method using dredging filling soil for embankment, and filling equipment for the dredging filling soil filling bag used in the method. Supported by the National High-tech Research and Development Program (863 Program) (project number: 2012AA112509).

Background technique

At present, the dikes and breakwaters in sea reclamation projects and waterway construction projects are generally carried out by riprap, blasting, or large-scale filling bags filled with sand. Using riprap and blasting will require Large-scale mining of rocks will cause serious damage to the regional environment and will also consume a large amount of resources. It seriously deviates from the resource-saving and environmental-protective economic development mode in my country's current economic development mode. Large-scale filling bags filled with sand are used. The embankment technology will also consume a large amount of sand and gravel resources, which also seriously deviates from the resource-saving and environmental protection economic development mode in my country's current economic development mode, and will greatly increase the embankment cost. In sea reclamation projects and waterway construction projects, a large amount of dredged soil will be produced, and a large part of the dredged soil is the residual soil at the bottom of the seabed, especially the residual soil produced by dredging in the channel construction project. The reserves are large, and part of the dredged soil will become spoil.

Contents of the invention

The purpose of the present invention is to provide a method of embankment embankment using dredging soil for embankment, and the large-scale embankment equipment for embankment using dredging soil used in this method, the device Including; the filling equipment of the filling bag for filling the soil filling bag, and the vacuum device under the embankment. The technical problem to be solved by this technology is to use the dredged soil in engineering construction to solve the problem of lack of traditional embankment materials for dikes and breakwaters in current sea reclamation projects and channel construction projects, while reducing the cost of embankment construction and protecting the environment.

The technical solution for accomplishing the task of the above invention is a large-scale filling bag embankment method using dredging filling soil for embankment, which is characterized in that the steps are as follows,

⑴. Design and calculate the depth and spacing of the plastic drainage boards on the soft soil foundation under the embankment, complete the construction of the drainage boards and install the monitoring facilities in the soft soil foundation according to the design requirements;

⑵. Complete the construction of each layer of sand quilt layer and soft soil row;

⑶. Calculate the size and quantity of the required filling bags according to the design and use the polyester woven fabrics required by the design to process large filling bags for standby;

⑷. Install dredged soil filling equipment, including silos or pools, and the interconnection of mud pumps, thick slurry pumps and rigid feed pipelines, installation, commissioning and trial operation, and connection of dredged soil filling equipment; as shown in Figure 2.

⑸. Install the vacuum device.

This application recommends that the vacuum device is composed of a centrifugal pump, a jet vacuum chamber and a circulating water tank. The vacuum device is installed in the drainage ditch according to the design position. The installation elevation of the entire vacuum device should be lowered as far as possible, especially the circulating water tank, which is conducive to the discharge of the extracted water. The schematic diagram of the vacuum device installation is shown in Figure 1.

⑹. Lay the vacuum drainage pipe network under the dredged soil filling bag.

The vacuum drainage pipe network includes the main pipe and the filter pipe. The main pipe and the filter pipe are all Φ76mm PVC pipes. The Φ5mm holes are evenly distributed on the filter pipe to facilitate air and water absorption. The filter pipe is wrapped with needle-punched non-woven geotextile, the main pipe and the filter pipe. Together to form the suction pipe in the vacuum preloading method, the extended connection joints of the main pipe and the filter pipe are connected by two-way joints made of threaded steel wire rubber hoses, and the length is about 300mm. The threaded steel wire rubber hoses used for the two-way joints should be able to To adapt to the uneven deformation of the ground, the connection must be sealed and fastened with No. 10 or No. 12 iron wire; the connection between the main pipe and the filter pipe should be connected by a tee and a cross, and the tee and the cross are both made of 76mm steel pipes , The connection between the three-way and four-way and each pipe should be connected by two-way joints. The arrangement of the main pipe and the filter tube adopts a strip shape, a comb shape or other suitable shapes, and its structure diagram is shown in Figure 3.

⑺. Filling bag laying and filling construction for filling dredged soil.

As shown in the process flow in Figure 4, the large-scale filling bags processed in the early stage are laid flat on the embankment that has completed the vacuum drainage pipe network, and after accurate positioning, the dredged soil filling construction is carried out, and this layer is installed at the same time as the filling construction Relevant monitoring and testing pre-embedded facilities for filling bags;

At the same time, a number of sandbags are filled with river sand or sea sand; the embankment structure adopts a layer of filled dredging soil bags, and then a layer of sand bags; forming a structure pattern in which dredged soil layers and sand layers alternate;

⑻. Install dike seal system. The embankment surface sealing system is composed of double-layer needle-punched non-woven geotextile, anti-seepage geomembrane and sealing body. The installation diagram of the embankment surface sealing system is shown in Figure 3;

⑼. After the filling of the dredged soil filling bag is completed, the vacuum system is turned on to accelerate the drainage and consolidation of the dredged soil filling body, and relevant monitoring and testing work is carried out at the same time. The construction time of the next layer of filling bag body is determined according to the monitoring and testing data;

⑽. The whole process of raising the embankment by using the dredged soil to fill and build the embankment is completed in time to protect the surface structure on the outer sea side and the slope protection structure on the inner sea side to strengthen the protection of the embankment.

The scheme for completing the second invention task of the present application is that the filling equipment of the dredging soil filling bags used in the above large-scale filling bag embankment method using dredging filling soil is provided with a silo for storing dredged soil Or material pond, it is characterized in that, be provided with mud pump suction pipe and thick slurry pump feed pipe on this silo or material pond; Described mud pump suction pipe is connected with mud pump inlet, and the mud pump The outlet of the thick slurry pump is connected to the inlet of the thick slurry pump through the delivery pipe of the mud pump; the inlet pipe of the thick slurry pump is also connected to the inlet of the thick slurry pump, and the outlet of the thick slurry pump is fed through the The tube is connected to the filling bag.

The large-scale filling bag embankment technology utilizing dredged soil filling and embankment of the present invention comprises the following parts:

1. Embankment structure with interlayers of dredged soil (bags) and sand (bags). The large-scale filling bag embankment technology of using dredged soil to fill the embankment adopts the interlayer structure of the filling bag filled with dredged soil and the filled bag filled with sand, and its structure diagram is shown in Figure 1. . As shown in Figure 1: the embankment structure of the large-scale filling bag embankment technology using dredged soil filling and embankment includes a soft soil foundation drainage board under the embankment, a sand quilt on the original ground line, a soft row above it, and a soft row above the soft row A layer of filling bags filled with dredged soil and a layer of sand-filled bags are used as the interlayer structure of the embankment, and the outer sea side of the embankment rises with the rise of the embankment using non-woven geotextile + bagged gravel + open Mountain rocks (or two pieces of stones) + 2t four-foot hollow square face protection structure for anti-scour protection, and the inner sea side of the embankment rises with the embankment body using a slope protection structure of non-woven geotextile + bagged crushed stones + mountain stones (or two pieces of stones) to protect;

2. Dredged soil filling equipment. The dredged soil filling uses a high-power thick slurry pump to reduce the water content in the filling bag and increase the proportion of solids in the filling bag. The supporting equipment includes a silo (pool) and a mud pump. The whole process of bag filling and filling construction has sufficient material supply. The supporting mud pump is used to pump the water-soil mixture of dredged soil from the silo (pool) automatically when the thick slurry pump is pumped into the thick slurry pump. The outlet of the thick slurry pump is connected to a rigid delivery pipeline with a diameter of not less than 10 inches, and the outlet end of the rigid delivery pipeline is inserted into the reserved cuff of the filling bag. The schematic diagram of the connection and working mode of the dredged soil filling equipment is shown in Figure 2; In the large-scale filling bag embankment technology of filling and embankment, the filling construction of sand filling bag is still carried out by the water flushing and pumping construction method of high pressure water gun and mud pump;

3. Vacuumize the drainage pipe network at the lower part of the dredged soil filling bag. The drainage pipe network is composed of a main pipe and a filter pipe. The functions of the main pipe and the filter pipe are to transmit the vacuum pressure and transport the air and water under the membrane to the water tank of the vacuum device outside the membrane through these two pipes. The wall of the filter tube is provided with water absorption holes, and the Φ5mm holes are evenly distributed on the filter tube to facilitate air suction and water absorption. The extended connection joints of the main pipe and the filter pipe are connected by two-way joints made of threaded steel wire rubber hoses, the length of which is about 300mm. It must be sealed and fastened with No. 10 or No. 12 iron wire; the main pipe and the filter pipe should be connected with each other by three-way and four-way connections. The three-way and four-way connections are made of 76mm steel pipes or U-PVC pipes. The connection with each pipe shall be connected by a two-way joint. The layout of the main pipe and the filter tube adopts a strip shape, a comb shape or other suitable shapes, and its structural schematic diagram is shown in Figure 2-1 and Figure 2-2;

4. Air extraction system and dike surface sealing system. The embankment surface sealing system is composed of double-layer needle-punched non-woven geotextile, anti-seepage geomembrane and sealing body; the air pumping system adopts a vacuum device, which is generally composed of a centrifugal pump, a jet vacuum chamber and a circulating water tank. The setting quantity shall be set according to the principle of 800~1000m ² /1 set of vacuum devices. The vacuum device is arranged and installed in the drainage ditch at the low position on the inner sea side according to the design position. The installation elevation of the entire vacuum device should be lowered as far as possible, especially the circulating water tank, which is conducive to the discharge of the extracted air and water. The schematic diagram of the installation structure of the embankment surface sealing system and air extraction system is shown in Figure 3.

5. Embankment safety monitoring and detection system. The embankment safety monitoring system includes the monitoring of pore water pressure in the soft soil of the embankment foundation, the monitoring of layered compression deformation, the monitoring of deep horizontal displacement, the monitoring of the surface settlement of the embankment, the monitoring of the compression deformation of the filling bag of the embankment, and the monitoring of the pore water in the filling bag of the dredged soil. Monitoring of pressure dissipation, force and deformation monitoring of dredged soil filling bags, monitoring of filling pressure of dredged soil filling bags, detection of strength growth and regularity of dredged soil in embankment dredged soil filling bags, and soft soil strength growth of embankment foundation Situation detection, embankment safety monitoring and detection system is shown in Figure 3.

The dredged soil described in the present invention is the deep dredged soil in channel construction, with a clay content of 10% to 60%;

Table 1 Technical indicators of polyester woven fabric for filling bag material

item head unit technical indicators Mass per unit area g/ ^m2 ≥230 Warp Strength kN/m ≥50 Warp elongation at break % ≤35 Weft Strength kN/m ≥50 Weft elongation at break % ≤30 Warp trapezoidal tear strength N ≥800 Weft trapezoidal tear strength N ≥800 CBR Bursting Strength N ≥5000 Vertical permeability coefficient cm/s ≥10 ^-3 Equivalent pore diameter O ₉₅ mm 0.20 seam strength kN/m ≥30 Anti-aging performance strength retention rate (168h) % ≥70

The construction equipment is a thick slurry pump (horizontal gravel pump) and equipped with corresponding silos (pools) and other necessary auxiliary equipment, dredging soil embankment technical equipment composed of thick slurry pumps and silos (pools), etc. The solid content of the pumped thick slurry is >60%, and the pumping volume per hour is not less than 200m ³ . Among them, the dredging soil embankment technical equipment composed of thick slurry pumps and troughs, etc., the solid content of the pumped thick slurry is >60%, and the pumping volume per hour is not less than 200m ³ . Thick slurry pump technical parameters: motor power > 30kW, motor speed 960r/min, working pressure 6kg/cm ² , pumping flow rate > 200 m ³ /h, head > 60m, suction lift > 2m, inlet and outlet diameter > 100mm, silo (pool) technical parameters: volume>100m ³ , depth>1m, pumping pipe technical parameters: diameter>100mm, pipe is hard pipe, bearing strength>6kg/cm ² . The main pipe of the vacuum drainage system is a Φ76mm PVC pipe, and the filter pipe is a Φ76mm PVC pipe with Φ5mm holes evenly distributed on the pipe wall, wrapped with a reverse filter geotextile, or a Φ76mm permeable corrugated hose, and the pressure it can withstand should not be less than 400kPa The vacuum pump is a jet vacuum pump, and the no-load vacuum degree behind the pump is not less than 96kPa; the soil strength detection technology is a cross plate and static penetration testing in-situ strength detection technology.

The present invention adopts the construction method of pumping dredged soil with low water content by thick slurry pump instead of the water flushing pumping construction method of high-pressure water gun and mud pump, and reduces the water content of dredged soil filled and filled into the bag body; the embankment structure adopts dredged soil ( bag) and sand (bag) interlayer structure and arrange vacuum drainage device under the dredged soil (bag) layer to speed up the drainage of the dredged soil filled in the large filling bag and accelerate the growth of soil strength in the filling bag , improve the overall stability of the embankment, ensure the stability and safety of the embankment, break through the existing norms and regulations that the clay content of the large-scale filling bag embankment technology is less than 10%, and bury pore water pressure gauges, layered settlement pipes, inclinometer pipes, The settlement plate monitors the soil in the filling bag and the soft soil foundation under the embankment during the filling construction and the consolidation of the soil in the bag at the later stage. The soft soil strength of the foundation is tracked and tested.

After reasonable improvement, adopting appropriate filling technology, rationally designing embankment structure, and adopting appropriate drainage technology, it is not only technically feasible to build an embankment with dredged soil dominated by residual soil, but also can save a lot of construction material costs (experiments carried out The application of the project shows that the construction cost of filling the embankment with dredged soil can be saved by more than 30% compared with the construction cost of filling the sand embankment, and it can save more than 40% compared with the construction cost of riprapping the silt embankment), protect the natural environment of the area, and reduce It has a good application and development space for the impact of construction projects near the marine environment.

The invention has the following effects: the use of dredged soil solves the problem of lack of traditional embankment materials for dikes and breakwaters in current sea reclamation projects and waterway construction projects, while reducing embankment construction costs and protecting the environment. Design reasonable embankment structure type, use thick slurry pump to improve the filling equipment of traditional filling bag embankment, reduce the water content of filling bag soil, use geotextile with larger effective pore size to make filling bag and set up pumping bag Vacuum drainage technology accelerates the drainage and consolidation of dredged soil-water mixture filled into bags, accelerates its strength growth, ensures the stability of the embankment, and breaks through the specifications for large-scale filling bag embankment technology that requires the clay content of the filling body to be less than 10%. It is required to broaden the selection range of filling materials for large-scale filling bag embankment technology, and provide a new technology with good economic and environmental protection benefits for embankment construction.

Description of drawings

Fig. 1 is a schematic diagram of the connection and working mode of the dredging soil filling equipment of the present invention;

Figure 2-1 and Figure 2-2 are schematic diagrams of the layout of the vacuum drainage pipe network in strip distribution and comb distribution respectively;

Fig. 3 is the embankment structure, vacuum drainage system and monitoring system schematic diagram of the large-scale filling bag embankment technology utilizing dredging soil filling embankment of the present invention;

Fig. 4 is a schematic flow chart of the dredged soil filling construction process of the present invention.

Detailed ways

In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited only to the following examples.

Example 1:

As shown in Figure 3, the large-scale filling bag embankment technology of filling the embankment with dredged soil includes the following steps:

⑴. Design and calculate the depth and spacing of the plastic drainage boards on the soft soil foundation under the embankment, complete the construction of the drainage boards and install the monitoring facilities in the soft soil foundation according to the design requirements;

⑵. Complete the construction of each layer of sand quilt layer and soft soil row;

⑶. Calculate the size and quantity of the required filling bags according to the design and use the polyester woven fabrics required by the design to process large filling bags for standby;

⑷. Install dredged soil filling equipment, including silos (pools) and mud pumps, mud pumps, thick slurry pumps, and rigid feed pipelines for interconnection and installation, commissioning and trial operation. The connection of dredged soil filling equipment is shown in Figure 2;

⑸. Install an extraction system. The air extraction system adopts a vacuum device, which is composed of a centrifugal pump, a jet vacuum chamber and a circulating water tank. The vacuum device is installed in the drainage ditch according to the design position. The installation elevation of the entire vacuum device should be lowered as far as possible, especially the circulating water tank, which is conducive to the discharge of the extracted water. The schematic diagram of the installation of the air extraction system is shown in Figure 1;

⑹. Lay the vacuum drainage pipe network under the dredged soil filling bag. The vacuum drainage pipe network includes the main pipe and the filter pipe. The main pipe and the filter pipe are all Φ76mm PVC pipes. The Φ5mm holes are evenly distributed on the filter pipe to facilitate air and water absorption. The filter pipe is wrapped with needle-punched non-woven geotextile, the main pipe and the filter pipe. Together to form the suction pipe in the vacuum preloading method, the extended connection joints of the main pipe and the filter pipe are connected by two-way joints made of threaded steel wire rubber hoses, and the length is about 300mm. The threaded steel wire rubber hoses used for the two-way joints should be able to To adapt to the uneven deformation of the ground, the connection must be sealed and fastened with No. 10 or No. 12 iron wire; the connection between the main pipe and the filter pipe should be connected by a tee and a cross, and the tee and the cross are both made of 76mm steel pipes , The connection between the three-way and four-way and each pipe should be connected by two-way joints. The layout of the main pipe and the filter tube adopts a strip shape, a comb shape or other suitable shapes, and its structure diagram is shown in Figure 3;

⑺. Filling bag laying and filling construction for filling dredged soil. As shown in the process flow in Figure 4, the large-scale filling bags processed in the early stage are laid flat on the embankment that has completed the vacuum drainage pipe network, and after accurate positioning, the dredged soil filling construction is carried out, and this layer is installed at the same time as the filling construction Relevant monitoring and testing pre-embedded facilities for filling bags;

⑻. Install dike seal system. The embankment surface sealing system consists of double-layer needle-punched non-woven geotextiles, anti-seepage geomembrane and sealing body. The installation diagram of the embankment surface sealing system is shown in Figure 1;

⑼. After the filling of the dredged soil filling bag is completed, the vacuum system is turned on to accelerate the drainage and consolidation of the dredged soil filling body, and relevant monitoring and testing work is carried out simultaneously. The embankment structure uses a layer of dredged soil bags and a layer of sand bags The soil and sand interlayer structure type, the construction time of the next layer of filling bags shall be determined according to the monitoring and testing data;

⑽. The whole process of raising the embankment by using the dredged soil to fill and build the embankment is completed in time to protect the surface structure on the outer sea side and the slope protection structure on the inner sea side to strengthen the protection of the embankment.

In Figure 1, silo (or tank) 1, mud pump suction pipe 2, mud pump 3, thick slurry pump suction pipe 4, thick slurry pump 5, mud pump delivery pipe 6, thick slurry pump delivery pipe 7. Filling bag8. In Fig. 2, a filter tube 9, a main pipe 10, and a membrane outlet 11.

In Figure 3, embankment protection structure 12, riprap bottom protection 13, drainage board (square layout) 14, inclinometer pipe (including foundation layered settlement monitoring) 15, open sea 16, embankment crest front line 17, wave wall 18 , one layer of software row 19, vacuum filter pipe network 20 under the bag, sand quilt 21, pore water pressure gauge 22, vacuum drainage sealing film 23, embankment crest protection structure 24, dredging soil filling bag 25, sand filling Filling bag 26, settling plate 27, natural mud interface 28, vacuum pump 29.

Example 2:

It is basically the same as in Example 1, except that the filter pipe under the dredged soil filling bag is changed to a Φ76mm water-permeable corrugated hose, and the four-way and three-way connections between the main pipe and the filter pipe are U-PVC four-way and three-way.

Example 3:

It is basically the same as Example 1, except that according to the difference in clay content of the dredged soil, the embankment structure of one layer of sand-filled bags and two layers of dredged soil-filled bags is used instead of soil (bags) and sand (bags) alternately. The structure type of the embankment body with layers, or the structure type of the embankment body with all dredged soil filling bags.

Claims (6)

1. utilize dredging markets to carry out the large-scale of fill and charge a bag fill method, it is characterized in that, step is as follows,

(1). the soft foundation plastic draining board degree of depth and spacing under designing and calculating dike, complete band drain by designing requirement and construct and install monitoring facilities in soft foundation;

(2). complete sand tegillum and weak soil and arrange the construction of each one deck;

(3). by charging bag size and number needed for designing and calculating, to adopt a terylene woven fabric machining large for designing requirement to charge bag for subsequent use;

(4). dredging markets apparatus for filling is installed, comprises feed bin or material pond, and being interconnected and Installation and Debugging trial run of slush pump, underflow pump and rigidity conveying pipeline, dredging markets apparatus for filling connects;

(5). vacuum extractor is installed;

(6). lay under dredging markets charges bag and vacuumize drainage pipeline networks;

(7). the bag that charges charging dredging markets is laid and charges construction;

(8). install dike table sealing system, this dike table sealing system is made up of double-deck acupuncture nonwoven geotextiles and anti-seepage geomembrane and seal;

(9). dredging markets charges bag and has charged the discharging consolidation that rear unlatching pumped vacuum systems acceleration dredging markets charges body, synchronously carrying out relevant monitoring and testing;

(10). the levee body utilizing dredging markets to charge fill raises overall process and completes the protective slope structure of side, off-lying sea ground surface protection structure and side, inland sea in time to strengthen the protection to levee body;

The step (7) described bag that charges charging dredging markets is laid and is charged construction and adopts following technological process: the large-scale bag that charges machined early stage is laid in complete to vacuumize on levee body that drainage pipeline networks lays and accurately carry out dredging markets behind location and charges construction, charges construction and installs this layer simultaneously and charge the relevant monitoring of bag and detect pre-buried facility; Meanwhile, some sand pockets are charged with river sand or extra large sand; Levee body structure adopts one deck to charge dredging earth bag, pile up one deck sand pocket again; The structural shape that formation dredging markets soil layer and layer of sand replace mutually;

Described dredging markets is waterway construction mid-deep strata dredging markets, clay content 10% ~ 60%; Making the described large-scale bag material that charges is terylene woven fabric, and the material parameter of filling bag material terylene woven fabric technical indicator is as follows:

Mass area ratio>=230 g/m ²

Warp-wise intensity >=50 kN/m

Warp-wise elongation at break≤35 %

Latitudinal strength >=50 kN/m

Broadwise elongation at break≤30 %

Trapezoidal tearing resistance >=800 N of warp-wise

Trapezoidal tearing resistance >=800 N of broadwise

CBR bursting strength >=5000 N

Vertical dimension transmission coefficient>=10 ^-3cm/s

Effective aperture O ₉₅0.20 mm

Joint strength >=30 kN/m

168h anti ageing property strength retention >=70 %.

2. according to claim 1ly utilize dredging markets to carry out the large-scale of fill to charge a bag fill method, it is characterized in that, the (5) described vacuum extractor of step is made up of centrifugal pump, jetting stream vacuum chamber and cyclic water tank, and this vacuum extractor is arranged by design attitude and is arranged in gutter.

3. according to claim 1 and 2ly utilize dredging markets to carry out the large-scale of fill to charge a bag fill method, it is characterized in that, described levee body structure comprises soft foundation band drain under dike, it original place upper thread is sand quilt, it it is soft raft, more than soft raft adopt one deck charge dredging markets charge that bag and one deck charge sand charge bag alternating layers structural shape as levee body, side, levee body off-lying sea raises with levee body and adopts the ground surface protection structure of non-woven geotextile+packed rubble+cut into a mountain stone or two slabstone+2t four-corner hollow square blocks to carry out scour protection, side, levee body inland sea raises with levee body and adopts the protective slope structure of non-woven geotextile+packed rubble+cut into a mountain stone or two slabstones to protect.

4. one kind according to claim 1ly utilizes dredging markets to carry out the large-scale of fill to charge the apparatus for filling that bag dredging markets that fill method uses charges bag, be provided with the feed bin or material pond of depositing dredging markets, it is characterized in that, this feed bin or material pond are provided with slush pump suction tube and underflow pump feed pipe; Described slush pump suction tube is connected with slush pump charging aperture, and the discharging opening of this slush pump is connected with dense slush pump charging aperture by slush pump conveying pipeline; Described underflow pump feed pipe is also connected with underflow pump charging aperture, this underflow pump discharging opening by underflow pump conveying pipeline with charge bag and be connected.

5. dredging markets according to claim 4 charges the apparatus for filling of bag, it is characterized in that, described underflow pump outlet connects diameter and is not less than 10 inches of rigidity feeding pipes, and the insertion of this rigidity feeding pipe outlet ends charges bag and reserves cuff.

6. the dredging markets according to claim 4 or 5 charges the apparatus for filling of bag, it is characterized in that, the water that construction adopts giant to add slush pump of charging that described dredging markets charges bag rushes pumping construction mode and carries out.